Bondi accretion theory
E1017418
Bondi accretion theory is a model in astrophysics that describes how matter spherically accretes onto a compact object under the influence of its gravity from a surrounding gas cloud.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bondi accretion theory canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13062153 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Bondi accretion theory Context triple: [Hermann Bondi, notableWork, Bondi accretion theory]
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A.
Hayward black hole model
The Hayward black hole model is a theoretical, regular (non-singular) black hole solution in general relativity that modifies the central singularity with a de Sitter core, often studied as an alternative to classical black hole models.
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B.
Zeldovich–Novikov theory of black holes
The Zeldovich–Novikov theory of black holes is a foundational theoretical framework that analyzes the formation, structure, and astrophysical properties of black holes within the context of general relativity and high-energy astrophysics.
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C.
Blandford–Znajek process
The Blandford–Znajek process is a theoretical mechanism by which energy is extracted from a rotating black hole via electromagnetic fields and surrounding plasma, powering phenomena such as relativistic jets from active galactic nuclei.
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D.
Penrose process for energy extraction
The Penrose process for energy extraction is a theoretical mechanism in general relativity by which rotational energy can be extracted from a spinning black hole via particle interactions in its ergosphere.
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E.
Chandrasekhar–Friedman–Schutz instability
The Chandrasekhar–Friedman–Schutz instability is a gravitational-radiation-driven instability in rotating stars that can cause certain oscillation modes to grow by emitting gravitational waves.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Bondi accretion theory Target entity description: Bondi accretion theory is a model in astrophysics that describes how matter spherically accretes onto a compact object under the influence of its gravity from a surrounding gas cloud.
-
A.
Hayward black hole model
The Hayward black hole model is a theoretical, regular (non-singular) black hole solution in general relativity that modifies the central singularity with a de Sitter core, often studied as an alternative to classical black hole models.
-
B.
Zeldovich–Novikov theory of black holes
The Zeldovich–Novikov theory of black holes is a foundational theoretical framework that analyzes the formation, structure, and astrophysical properties of black holes within the context of general relativity and high-energy astrophysics.
-
C.
Blandford–Znajek process
The Blandford–Znajek process is a theoretical mechanism by which energy is extracted from a rotating black hole via electromagnetic fields and surrounding plasma, powering phenomena such as relativistic jets from active galactic nuclei.
-
D.
Penrose process for energy extraction
The Penrose process for energy extraction is a theoretical mechanism in general relativity by which rotational energy can be extracted from a spinning black hole via particle interactions in its ergosphere.
-
E.
Chandrasekhar–Friedman–Schutz instability
The Chandrasekhar–Friedman–Schutz instability is a gravitational-radiation-driven instability in rotating stars that can cause certain oscillation modes to grow by emitting gravitational waves.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical accretion model
ⓘ
theoretical model ⓘ |
| alsoKnownAs | Bondi spherical accretion model NERFINISHED ⓘ |
| appliesTo |
black holes
ⓘ
compact objects ⓘ neutron stars ⓘ stars moving slowly relative to ambient gas ⓘ white dwarfs ⓘ |
| assumes |
Newtonian gravity
NERFINISHED
ⓘ
adiabatic or polytropic equation of state ⓘ no magnetic fields ⓘ no radiative feedback on the flow ⓘ non-rotating gas ⓘ spherical symmetry ⓘ steady-state flow ⓘ |
| basedOn | hydrodynamic equations for compressible flow ⓘ |
| context | spherically symmetric accretion ⓘ |
| defines | Bondi radius as characteristic gravitational capture radius ⓘ |
| dependsOn |
density of the ambient gas
ⓘ
mass of the accreting object ⓘ sound speed in the ambient gas ⓘ |
| describes |
accretion from a surrounding gas cloud under gravity
ⓘ
spherical accretion of matter onto a compact object ⓘ |
| developedBy | Hermann Bondi NERFINISHED ⓘ |
| field | astrophysics ⓘ |
| generalizedBy | Bondi–Hoyle–Lyttleton accretion theory NERFINISHED ⓘ |
| influenced |
accretion prescriptions in numerical simulations
ⓘ
subsequent models of black hole growth in galaxies ⓘ |
| limitation |
assumes uniform ambient medium at infinity
ⓘ
neglects angular momentum of the inflowing gas ⓘ neglects detailed radiative transfer ⓘ neglects magnetic fields ⓘ |
| mathematicallyCharacterizedBy | critical point where flow speed equals sound speed ⓘ |
| namedAfter | Hermann Bondi NERFINISHED ⓘ |
| predicts |
Bondi accretion rate
NERFINISHED
ⓘ
existence of a sonic radius in the flow ⓘ radial profiles of density and velocity ⓘ |
| publicationYear | 1952 ⓘ |
| publishedIn | Monthly Notices of the Royal Astronomical Society NERFINISHED ⓘ |
| relatedTo | Bondi radius NERFINISHED ⓘ |
| usedFor |
estimating gas accretion rates onto black holes in galaxies
ⓘ
modeling accretion in X-ray binaries in simplified form ⓘ order-of-magnitude estimates in cosmological simulations ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Bondi accretion theory Description of subject: Bondi accretion theory is a model in astrophysics that describes how matter spherically accretes onto a compact object under the influence of its gravity from a surrounding gas cloud.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.